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Finding the Fourth Proportional to 1,250.92, 1,726.23 and 691.42

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Solution

The fourth proportional to 1,250.92, 1,726.23 and 691.42 is: 954.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,250.92 : 1,726.23 = 691.42 : x
  2. Step 2: Convert to fraction form
    1,250.92/1,726.23 = 691.42/x
  3. Step 3: Cross multiply
    1,250.92x = 1,726.23 × 691.42
  4. Step 4: Simplify right side
    1,250.92x = 1,193,549.95
  5. Step 5: Solve for x
    x = 1,193,549.95/1,250.92
  6. Step 6: Final answer
    x = 954.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.